package com.dxt.mqtt;

import com.dxt.common.AppConstant;
import com.dxt.common.SpringUtil;
import com.dxt.dao.BusiLogDao;
import com.dxt.mqtt.pushcallback.PushCallBack;
import com.dxt.service.CacheManager;
import org.eclipse.paho.client.mqttv3.MqttClient;
import org.eclipse.paho.client.mqttv3.MqttConnectOptions;
import org.eclipse.paho.client.mqttv3.MqttException;
import org.eclipse.paho.client.mqttv3.persist.MemoryPersistence;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;

import java.util.concurrent.ScheduledExecutorService;

/**
 * 模拟一个客户端接收消息
 * @author rao
 *
 */
@Repository
public class ClientSearch {

    private static CacheManager cacheManager;
    static {
        cacheManager = SpringUtil.getBean(CacheManager.class);
    }

    public void start() {
        String HOST = cacheManager.getSysConfigByCode(AppConstant.SYS_CONFIG_KEY.KEY_MQTT_SERVER_URL);
        //服务器内置主题，用来监测当前服务器上连接的客户端数量（$SYS/broker/clients/connected）
        String TOPIC = cacheManager.getSysConfigByCode(AppConstant.SYS_CONFIG_KEY.KEY_MQTT_TOPIC);
        String clientId = "client1";
        MqttConnectOptions options;
        String userName = cacheManager.getSysConfigByCode(AppConstant.SYS_CONFIG_KEY.KEY_MQTT_USER_NAME);
        String passWord = cacheManager.getSysConfigByCode(AppConstant.SYS_CONFIG_KEY.KEY_MQTT_PASSWORD);
        // host为主机名，clientid即连接MQTT的客户端ID，一般以唯一标识符表示，MemoryPersistence设置clientid的保存形式，默认为以内存保存
        try {
            MqttClient client = new MqttClient(HOST, clientId, new MemoryPersistence());
            // MQTT的连接设置
            options = new MqttConnectOptions();
            // 设置是否清空session,这里如果设置为false表示服务器会保留客户端的连接记录，设置为true表示每次连接到服务器都以新的身份连接
            options.setCleanSession(false);
            // 设置连接的用户名
            options.setUserName(userName);
            // 设置连接的密码
            options.setPassword(passWord.toCharArray());
            // 设置超时时间 单位为秒
            options.setConnectionTimeout(Integer.parseInt(cacheManager.getSysConfigByCode(AppConstant.SYS_CONFIG_KEY.KEY_MQTT_CONN_TIMEOUT)));
            // 设置会话心跳时间 单位为秒 服务器会每隔1.5*20秒的时间向客户端发送个消息判断客户端是否在线，但这个方法并没有重连的机制
            options.setKeepAliveInterval(Integer.parseInt(cacheManager.getSysConfigByCode(AppConstant.SYS_CONFIG_KEY.KEY_MQTT_KEEP_ALIVE)));
            // 设置回调
            client.setCallback(new PushCallBack());
            client.connect(options);
            //订阅消息
            int[] Qos  = {Integer.parseInt(cacheManager.getSysConfigByCode(AppConstant.SYS_CONFIG_KEY.KEY_MQTT_QOS))};
            for(int i = 0; i < TOPIC.split(",").length; i++){
                String[] topic1 = {TOPIC.split(",")[i]};
                client.subscribe(topic1, Qos);
            }
        } catch (MqttException e) {
            e.printStackTrace();
        }
    }

    public static void main(String[] args) {
        ClientSearch clientSearch = new ClientSearch();
        clientSearch.start();
    }

}
